Subtract 8/21 from 4/56
4/56 - 8/21 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
4/56 = 4 × 3/56 × 3 = 12/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
8/21 = 8 × 8/21 × 8 = 64/168 - Subtract the two like fractions:
12/168 - 64/168 = 12 - 64/168 = -52/168 - After reducing the fraction, the answer is -13/42
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